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DavidYorkshireFTW
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#1761
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#1761
(Original post by AtomicMan)
No, neurones secrete neurotransmitters by exocytosis.
Is that when the vesicles in the presynaptic neurone bind to the presynaptic membrane and release acetylcholine?
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AtomicMan
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#1762
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#1762
(Original post by DavidYorkshireFTW)
Is that when the vesicles in the presynaptic neurone bind to the presynaptic membrane and release acetylcholine?
yes

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Mangodepo11
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#1763
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#1763
Ok I think homeostasis may come up as an essay title, I'm just wondering if theres any other methods of homeostatsis that people can think of apart from-

- Blood pressure
- Temperature
- glucose
- Ph buffers
- Immune response(Possibly)
- Kidney ultrafilteration
?
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AtomicMan
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#1764
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#1764
Just got 55/100 on the specimen paper, should I be worried?
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master y
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#1765
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#1765
(Original post by AtomicMan)
Just got 55/100 on the specimen paper, should I be worried?
including the essay? if without essay then that's excellent
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AtomicMan
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#1766
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#1766
(Original post by master y)
including the essay? if without essay then that's excellent
With essay :ahee:

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Anjna
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#1767
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#1767
(Original post by AtomicMan)
Just got 55/100 on the specimen paper, should I be worried?
no don't be worried. just look back through the paper and see what topics you didn't do so well in and go over them and improve.
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master y
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#1768
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#1768
(Original post by AtomicMan)
With essay :ahee:

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well the specimen is very hard anyway, i wouldn't worry! i probably got the same mark
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blueeyedgirl
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#1769
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#1769
Hey guys Am I right in thinking that as I got a B in Unit 4, I can't get an A* overall? I assumed this was true but a friend confused me about the A* today! Thanks
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Beth_L_G
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#1770
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#1770
(Original post by blueeyedgirl)
Hey guys Am I right in thinking that as I got a B in Unit 4, I can't get an A* overall? I assumed this was true but a friend confused me about the A* today! Thanks
As long as you get an A overall, and 270 ums in A2 you can still get an A*
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ActaNonVerba
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#1771
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#1771
need help on essay writing! does anyone know where I can find sample essay answers (that get high marks, about 20-24 range) or if anyone is willing to send me their own answers so I can have a look to see how to approach things.
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charch95
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#1772
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#1772
(Original post by mariposaa)
Has anyone studied the kidneys in relation to homeostasis (for off-spec essay topic)? I can't seem to find any clear reading material, suggestions would be greatly appreciated!

Edit:


@charch95, what materials did you use? Or websites?...Please?
This was just on a list of essay plans that my teacher gave me. Sorry, I don't have any other materials, or know anything personally about the kidney.
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ahawkes06
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#1773
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#1773
Hi there,

Does anyone know how much this UNIT 5 BIOL is worth?

I think it's around 23.3%. If I'm averaging a solid B on the other 77%, then whats the lowest I can get on this paper and still achieve a B overall?

I've left myself a week to revise it and starting to panic!
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F1's Finest
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#1774
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#1774
(Original post by Richyp22)
Ok I think homeostasis may come up as an essay title, I'm just wondering if theres any other methods of homeostatsis that people can think of apart from-

- Blood pressure
- Temperature
- glucose (concentration?)
- Ph buffers
- Immune response(Possibly)
- Kidney ultrafilteration
?
also....

blood pressure?

It can be controlled via the SAN, with impulses either from the sympathetic or parasymphatetic nerves?
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master y
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#1775
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#1775
(Original post by ahawkes06)
Hi there,

Does anyone know how much this UNIT 5 BIOL is worth?

I think it's around 23.3%. If I'm averaging a solid B on the other 77%, then whats the lowest I can get on this paper and still achieve a B overall?

I've left myself a week to revise it and starting to panic!
i think u can get a C in biol5 to get a B overall. you would need to panic only if u need an a overll! :vader:
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Gnome :)
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#1776
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#1776
(Original post by ahawkes06)
Hi there,

Does anyone know how much this UNIT 5 BIOL is worth?

I think it's around 23.3%. If I'm averaging a solid B on the other 77%, then whats the lowest I can get on this paper and still achieve a B overall?

I've left myself a week to revise it and starting to panic!
How many UMS points (roughly) do you have?

If you had the middle B grade marks in each unit, that would be 225 UMS in AS year + 75UMS in U4 + 45UMS in U6= 345UMS in total. You need 420 total UMS marks for a B overall, so that's 75UMS for U5, which equates to a D grade

It does depend on your own UMS marks though.
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loveheartsandall
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#1777
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#1777
Hey, I have a question about how the synoptic essay is marked

Does anyone know if the criterias are marked independently??? E.G. If I was writing an essay on 'cycles in biology' and I wrote about three cycles, two of them were physiological cycles whilst the other is say a cycle in predation, and my scientific knowledge was good - would I only lose marks on breadth??

My teacher has been marking it dependently so despite writing all the right things, I got marked down on both scientific knowledge and breadth. Can anyone clarify?
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master y
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#1778
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#1778
Can anyone tell me what topics AS and A2 go under the topics

1. Physiological
2. Ecological ?

Thanks
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Beth_L_G
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#1779
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#1779
(Original post by loveheartsandall)
Hey, I have a question about how the synoptic essay is marked

Does anyone know if the criterias are marked independently??? E.G. If I was writing an essay on 'cycles in biology' and I wrote about three cycles, two of them were physiological cycles whilst the other is say a cycle in predation, and my scientific knowledge was good - would I only lose marks on breadth??

My teacher has been marking it dependently so despite writing all the right things, I got marked down on both scientific knowledge and breadth. Can anyone clarify?
You need to make 16 accurate points to get the 16 marks, and mention either 3 kingdoms or points from 3 different modules to get the breadth. So if you only wrote about 3 cycles, they would each have to have about 6 steps that you wrote about in incredible detail

Your teacher has been marking correctly

Hope that's helpful
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master y
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#1780
(Original post by Beth_L_G)
You need to make 16 accurate points to get the 16 marks, and mention either 3 kingdoms or points from 3 different modules to get the breadth. So if you only wrote about 3 cycles, they would each have to have about 6 steps that you wrote about in incredible detail

Your teacher has been marking correctly

Hope that's helpful
what denotes a 'point'
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